Public support for expansion in Utah, Nebraska and Idaho conflicts with many Republican officials' refusal to adopt the provision in the Affordable Care Act, CNBC reported.

Medicaid expansion could extend coverage to 150,000 low-income people in Utah, according to the Salt Lake Tribune, 92,000 people in Nebraska, according to the Lincoln Journal Star, and 62,000 people in Idaho, according to the Associated Press.

Before the midterm elections, 33 states and Washington, D.C. had expanded Medicaid, according to the Kaiser Family Foundation.

In Tuesday's elections, 41 percent of voters said health care was the most important issue. That made it the top concern, ahead of the economy and immigration, CNBC reported.